2023
Identifying treatment heterogeneity in atrial fibrillation using a novel causal machine learning method
Ngufor C, Yao X, Inselman J, Ross J, Dhruva S, Graham D, Lee J, Siontis K, Desai N, Polley E, Shah N, Noseworthy P, MN; New Haven C. Identifying treatment heterogeneity in atrial fibrillation using a novel causal machine learning method. American Heart Journal 2023, 260: 124-140. PMID: 36893934, PMCID: PMC10615250, DOI: 10.1016/j.ahj.2023.02.015.Peer-Reviewed Original ResearchConceptsOral anticoagulantsAtrial fibrillationPatient subgroupsComposite outcomeIschemic strokeEffect of OACsLifelong oral anticoagulationNonvitamin K antagonistNew oral anticoagulantsNonvalvular atrial fibrillationPrimary composite outcomeGlomerular filtration rateFuture prospective studiesOptumLabs Data WarehousePopulation-level effectivenessOAC useOral anticoagulationVASc scoreCause mortalityK antagonistsPrimary endpointWarfarin usersRenal functionAF patientsEntire cohort
2021
Clinician Trends in Prescribing Direct Oral Anticoagulants for US Medicare Beneficiaries
Wheelock KM, Ross JS, Murugiah K, Lin Z, Krumholz HM, Khera R. Clinician Trends in Prescribing Direct Oral Anticoagulants for US Medicare Beneficiaries. JAMA Network Open 2021, 4: e2137288. PMID: 34870678, PMCID: PMC8649845, DOI: 10.1001/jamanetworkopen.2021.37288.Peer-Reviewed Original ResearchConceptsDOAC useAnticoagulant prescriptionOral anticoagulantsUS cliniciansMedicare beneficiariesNational clinical practice guidelinesElevated bleeding riskOral anticoagulant prescriptionsRetrospective cohort studyDirect oral anticoagulantsClinical practice guidelinesUS Medicare beneficiariesInternal medicine physiciansNumber of cliniciansAnticoagulant prescribingDOAC prescriptionsUnique cliniciansBleeding riskCohort studyAnticoagulant strategiesPrescription claimsPractice guidelinesMAIN OUTCOMEMost indicationsMedicare population
2020
Comparative Effectiveness and Safety of Oral Anticoagulants Across Kidney Function in Patients With Atrial Fibrillation
Yao X, Inselman JW, Ross JS, Izem R, Graham DJ, Martin DB, Thompson AM, Ross Southworth M, Siontis KC, Ngufor CG, Nath KA, Desai NR, Nallamothu BK, Saran R, Shah ND, Noseworthy PA. Comparative Effectiveness and Safety of Oral Anticoagulants Across Kidney Function in Patients With Atrial Fibrillation. Circulation Cardiovascular Quality And Outcomes 2020, 13: e006515. PMID: 33012172, PMCID: PMC7580213, DOI: 10.1161/circoutcomes.120.006515.Peer-Reviewed Original ResearchMeSH KeywordsAdministration, OralAgedAged, 80 and overAnticoagulantsAntithrombinsAtrial FibrillationComparative Effectiveness ResearchDabigatranDatabases, FactualFactor Xa InhibitorsFemaleGlomerular Filtration RateHemorrhageHumansKidneyMaleMiddle AgedPyrazolesPyridonesRenal Insufficiency, ChronicRetrospective StudiesRisk AssessmentRisk FactorsRivaroxabanTime FactorsTreatment OutcomeUnited StatesWarfarinConceptsGlomerular filtration rateKidney functionMajor bleedingAtrial fibrillationOral anticoagulantsLower riskFiltration rateComparative effectivenessGlomerular filtration rate categoriesUS administrative claims databaseFalsification end pointsKidney function declineReduced kidney functionProportion of patientsAdministrative claims databaseSubstantial residual confoundingBaseline characteristicsFunction declineClaims databaseComparative safetyResidual confoundingTreatment weightingSimilar riskTreatment groupsPatients